Process of producing artificial leather.



C. E. ARNOLD.

PROCESS OF PRODUCING ARTIFICIAL LEATHER. APPLICATION FILED sPT.3. 1914.RENEWED JULY 9.19i1.

Patented Feb. 26,1918, 13

'IIIIHH IN UM C5 ,14 l In 7 onannns nnwoon marrow, or wrnnms'ron,DELAWARE, asslenoa '10 E. I. nu ron'r ma nEMoUns POWDER COMPANY, or'wrmvrme'ron, DELAWARE, A CORPORATION or NEW JERSEY.

PROCESS OF PRODUCING ARTIFICIAL LEATHER.

Application filed September 3, 1914, Serial No. 859,963. Renewed July's,1917. Serial Ito. 179,557.

= provement in Processes of Producing Artishaft on which thefabricfabric will be. very purpose of illustration I ficial Leather, and thefollowing is a description thereof.

.do hereby declare that full, clear, and exact y invention relatesparticularly to an Improvement in the methods of producing but moreespecially woven coated fabrics, fabrics carrying a coating or layer ofa nitrocellulose composition.

The object of my invention is to produce a product of this kind in whichthe layer of nitrocellulose composition carried by the effectively andsecurely anchored on the fabric, and in which the coating compositionwill adhere in an effective manner to the fabric.

While my invention is carried out in many different ways, for the shalldescribe only one way in which it may be carried out, and While,furthermore, it maybe carried out in connection with any desired form ofapparatus, for the purpose ofillustration. I have shown only one form ofapparatus in theaccompanying' drawings, in which- Figure 1 is a frontelevation of a machine which may be used in connection with-my process;I I Fig. 2 is a side elevation of the same; Fig. 3 is an end elevationin detail of a is carried when being fed into the machine;

Fig. 4 is an end elevation of one of the wogden shuttles used forcarrying the fabric; an I l 1 Fig. '5 is an end elevation of one of thegears. In the drawingsl have shown a machine having a mainframe 1,in-which there are carried three rolls 2, 3 and 4. These rolls 2, 3and 4are carried upon shafts 5, 6 and 7, respectively. The shaft 6 of themiddle roll 3 is maintained in a fixed position in the main frame 1. Theshafts 5 and 7, however, are supported in vertically movable Y boxes 8and 9, which are adapted to be adusted by means of screws 10 and 11,supported in the main frame '1 and having wormwheels 12 and 13- on theirends whichmesh' with worms 14 and 15, carried by two capable of being-.shafts 16 and 17, and adapted to be operated by handles 18 and 19. Theshafts 5, 6 and 7 20, 21 and 22, which are keyed to the shaft by meansof removable keys 23, said gears 20,21 and 22 being all of the samesize. Upon the other end of the said shafts 5, 6 and 7, are carriedgears 24,25 and 26, the gear25 being smaller than the gears-24 and.26,and said gears being'keyed to their respective shafts in a similarmanner to the gears 20, 21 and 22. Only one of these sets of gears isused at a given time. When the gears Patented Feb. 26, 1216.

carry, near one end thereof, gears 20, 21 and 22 are used the keys areremoved from gears 24 and 26, and when the gears 24, 25 and 26 are usedthe keys are removed from the gears 20 and 22. The gears 20, 21 and 22are used when it is desired to have the rolls 2, 3 and 4 moved at thesame 31 and- 32 fitting against the adjacent faces of the rolls 2 and 3to retain. a body of plastic material 35 in lace thereon. Near rame 1-supports in v the bottom the main a pair of arms 36 ashaft 37 adapted toreceive a wooden bobbin 38 carrying a roll of fabricsuch as cloth to beprovided with a coating. .A friction band 39 extends around the shaft37, so as to retard the unwinding of the fabric and therefore maintainit taut.

From the shaft 37, the fabric is fed over a guide roll 40, supported inthe arms 36.

The fabric may then be smeared in. any

suitable manner with a sticky cementing coat of a nitro-cellulosecomposition to aid in obtaining satisfactory anchorage, although thiscementing coat, isnot essential. From this point the fabric passesbetween the rolls 3 and 4, where it receives a thin coating of plasticmaterial from the body of a plastic nitro-cellulose composition 35.-After a thin coating has been applied in this manner, the coated fabricis subsequently run through the machine in the same manner,

and a second coating of plastic applied. The fact that two thin plasticcoatings are ap tie plied in this manner enables the first coating ofplastic material to be pushed into the total thickness desired by theapplication of only one coating the coating may be so thick that therolls do not push it into the fabric sufliciently to give goodanchorage. My invention involves the novel idea of applying first arather thin coating which thoroughly penetrates the fabric and thenapplying a coating of any desired thickness.

- The nitrocellulose compositionsapplied to the fabric may be of anysuitable kind which is of such a nature that they will harden or dryafter leaving the machine.

While I have described my invention above in detail, I wish it to beunderstood that many changes may be made therein without departing fromthe spirit of my invention. i

I claim:

1. The process of producing coated fabrics which comprises applying tothe fabric by pressure to cause incorporation therewith a relativelythin coating of a plastic containing nitrocellulose and then applyingthereto by pressure another coating of a composition containingnitrocellulose.

2. The process of producing coated fabrics which comprises applying tothe fabric a coating of a cementing material, then before this coatinghas been allowed to dry applying a relatively thin coating of plasticcontaining nitrocellulose, and then applying thereto another coating of-a composition containing nitrocellulose, said second and third coatingsbeing applied to the fabric by pressure.

3. The process of producing coated fabrics which comprises applying tothe fabric by pressure with calender rolls to cause in corporation withsaid fabric a relatively thin coating of a plastic containingnitrocellulose and then applying thereto by pressure with calender rollsanother coating of a. composition containing nitrocellulose.

4. The process of producing coated fabrics which comprises applying tothe fabric a coating of a cementing material, then before this coatinghas been allowed to dry applying a relatively thin coating of plasticcontaining nitrocellulose, and then applying thereto another coating ofa composition containing nitrocellulose, said second and third coatingsbeing applied to the fabric by pressure with calender rolls.

5. The process of producing coated fabrics which comprises applying tothe fabric by pressure to cause incorporation therewith a relativelythin coating of a plastic containing nitrocellulose and then applyingthereto by pressure another coating of a plastic composition containingnitrocellulose.

- 6. The process of producing coated fabrics which comprises applying tothe fabric a coating of a cementing material, then before this coatinghasbcen allowed to dry applying a relatively thin coating of plasticcontaining nitrocellulose, and then applving thereto another coating ofa composition containing nitrocellulose, said second and third coatingsbeingapplied to the fabric by pressure, the first plastic coating beingsubjected to pressure before applying the subsequent coating.

7. The process of producing coated fabrics which comprises applying tothe fabric a. coating of a cementing material, then before this coatinghas been allowed to dry applying a relatively thin coating of plasticcontaining nitrocellulose, and then applying thereto another coating ofa composition containing nitrocellulose. said second and third coatingsbeing applied to the fabric by pressure with calender rolls, the firstlastic coating being subjected to pressure efore applying the subsequentcoating.

8. The process of producing coated fabrics which comprises applying tothe fabric a coating of a cementing material, then before this coatinghas been allowed to dry applying a relatively thin coating of plasticcontaining nitrocellulose, and then applying thereto another coating ofa composition containing nitrocellulose, said second and third coatingsbeing applied to the fabric by pressure, the first plastic coating beingsubjected to pressure before applying the subsequent coating.

In testimony that I claim the foregoing I have hereunto set my hand.

CHARLES ELWOOD 'ARNOLD.

Witnesses:

H. W. MATHESON, HAMILTON BRADSHAW.

